Continuous Flow Electric Valves Overview; Continuous Flow Technical Specifications - Electric Valves - Teledyne SyriXus 65x Installation And Operation Manual

SyriXus Series Pumps Installation and Operation Guide
Section 5 Continuous Flow Introduction, Installation, and Operation
Table 5-5 Continuous Flow Technical Specifications - Electric Valves
Pressure fluctuation at switchover
Minimum
Maximum system backpressure
Maximum temperature
Maximum flow rate (mL/min)
Liquids: 65% of the single-pump
maximum rate.
Wetted materials in valve package
Valves
Tubing and fittings
5.3.1 Continuous Flow
Electric Valves
Overview
EAR99 Technology Subject to Restrictions Contained on the Cover Page
5-8
5 psi (0.35 bar), at system backpressures from 100 psi (6.9 bar) to the
single-pump maximum. Higher fluctuation occurs at pressures below 100 psi
(6.9 bar).
50.76 psi (3.5 bar)
The single-pump maximum. Valves rated to 10,000 psi [689.5 bar]
Maximum system fluid temperature 300 °F (150 °C)
Maximum valve assembly temperature 150 °F (65 °C)
1000x
500x
260x
Hastelloy, sapphire, ruby, PEEK, and PTFE
Hastelloy, gold
The single electric valves are designed to be installed on either side of
a single pump. A bracket at the bottom is inverted and the pump
tubing is repositioned to accomplish this. The single valve assembly
allows the pump to continuously operate, but the fluid flow is inter-
rupted when the cylinder becomes empty and the pump refills.
Delivery resumes once the cylinder is refilled.
The dual electric valve packages are installed between two pumps and
provide continuous flow with minimal interruption. When the deliv-
ering pump approaches empty, the other pump gradually takes over
fluid delivery allowing the first pump to refill. When the second pump
approaches empty, the first pump gradually takes over fluid delivery
allowing the second pump to refill. This cycle repeats continuously
until the fluid supply reservoir is empty or until the user (or external
programmed control) stops the pump.
When working with liquefied gases, the first indication that the reser-
voir is becoming empty is a poor refill of the SyriXus pump (less than
about 50% of full volume after pressurizing). Poor refills will ulti-
mately result in insufficient time for the pump to stabilize its pressure
before being called to take over delivery; which will result in an
alarm.
132.6
132.6
69.55
NOTE